Stitch separating and indenting machine



(No Model.) 3 Sheets-Sheet 2.

J. B. H ADAWA'Y. STITGH SEPARATING AND'INDENTING MACHINE. No. 536,338.Patented M ze, 1895.

Witnesses: liwenior:

(No Model.) I 3 Sheets-Sheet a.

, I J. B. HADAWAY.

STITCH SBPARATING AND INDENTING MACHINE. No. 536,338. Patented Mar. 26,1895.

Inventor:

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UNITED STATES PATENT OFFICE.

JOHN B. HADAWAY, OF BROOKTON, MASSACHUSETTS.

STITCH SEPARATING AND INDENTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 536,338, dated March26, 1895. Application filed September 25, 1894- Serial No. 524,018-(Nomodcl) To all whom it may concern.-

Be it known that I, JOHN B. HADAWAY, of Brockton, in the county ofPlymouth and State of Massachusetts, have invented a new and usefulStitch Separating and Indenting Machine, of which the following, takenin connection with the accompanying drawings, is a specification. Myinvention relates to stitch separating and indenting machines and itconsists in certain novel features of construction, arrangement andcombination of parts which will be readily understood by reference tothe description of the accompanying drawings and to the claims heretoappended and in which my invention is clearly pointed out.

Figure l of the drawings is a plan of a machine embodying my invention.Fig. 2 is a front elevation. Fig. 3 is a side elevation looking towardthe right side of Figs. 1 and 2. Fig. 4 isa side elevation of theindenting tool and its carrying lever, and Figs. 5 and 6 arerespectively a plan and a side elevation of the upper work support ortable.

In the drawings A is the bed of the machine; A, A, the bearings for thecam shaft B. A and A are upwardly projecting blocks formed integral withthe bed A, and A is a horizontal plate connecting the upper ends of saiduprights; C, the hand wheel; D, the driving wheel.

E is the lower work support; F, the vertically movable bar, for carryingsaid work support, fitted to a groove in the block A a is the pendentrod attached to said bar and connected by its lower end to a treadle(not shown).

b is the spring for pressing the bar F and the work support E upward,and c is the threaded sleeve for adjusting the tension of said spring.

G is the upper work support or table.

H is the locking lever carrying at its front end the pawl or pawls darranged to engage the ratchet plate e set in the back side of the barF, but shown only in dotted lines in Fig. 3, said pawl being pressedtoward said ratchet plate by the springf. H is the cam for operatingsaid lever H, and g is a spring for pressing the truck carried by therear end of said lever H into contact with said cam.

I is the feed slide. J is the cam lever for therefore need not befurther described here. 6:)

A is a stand projecting upward from the bed A, and may be formedintegral therewith, or be made separate therefrom and secured thereto,and has secured to its upper end the upper work support or table G,having in its front end the slot 2', and in its under surface near itsfront end the transverse semi-circular groove 2" to receive theprojecting portion of the line of stitches, when the Work is clampedbetween said table and the lower work support. The stand A has pivotedto its left vertical side the indenting lever L, made of the form shownin Fig. 4, and carrying at its rear end the truck h which rests upon,and is acted upon by the cam M to vibrate said lever in a verticalplane;

said truck being kept in contact with said I cam by the tension of thespring 72., connected at one end to said lever and at the other end tothe bed of the machine, as shown in Fig. 2.

The slide I has formed thereon or secured thereto the upwardlyprojecting stand- N, to the upper end of which is pivoted the feed pawlor point 0, made preferably in two parts and secured together, as shown.The working end of the feed pawl 0 projects into the slot z',in thefront end of the upper work support or table G, in an inclined positionwith its point or lower end, when retracted, just above the undersurface of said table and in near proximity to the indenting tool jmounted in the front end of the lever L as shown in Figs. 1, 2, 3, and4. The right hand side of the slot 11 is inclined to an angle of aboutthirty degrees to a perpendicular, and acts upon the pawl to raise itfrom the work, against the tension of the spring 7c, when the slide I ismoved toward the right of Fig. 2, said spring 7.: serving to press thepawl 0 down upon the stitch when the slide I is moved toward the left.

P is a gage stand secured to the upper side of the plate A and carryingat its upper end the fixed or revolving gage Z substantially as in myprior patent before cited.

The slide I has formed on its right hand end theextension I to the endof which is se-. cured the segment or curved stand Q in the pin 0connecting the feed lever and the feed slide as a means of adjusting theblock 19, shown only in dotted lines in Fig. 1, and the pin 0 in thegroove q of the slide I and the slotted arm of the feed lever Jrespectively, for the purpose of varying the travel of said slide andconsequently of the pawl O.

The lever B is shown with a portion of its outer end broken away butitsouterarm may be of any suitable length for convenient manipulation bythe operators'hand, and maybe operated to adjust the travel ofthe slide,either when the machine is in operation, or in a state of rest.

The operation of my invention is as follows: The several parts of themachine being in the positions shown in the drawings the operator firstturns the hand wheel in the direction indicated by the arrow on Fig.3,;1 distance equal to about ninety degrees when the indenting tool willbe raised to the extreme of its upward movement by the rotation of thecam M and the contraction of the spring h and the lower work support isunlocked by the downward movement of the pawl d, as the lever H is movedabout its fulcrum-pin, by the contraction of the spring g, asthe cam IIre-- volves, and the shoulder 0' of the pawl-dco mes in contact with thepin ssubstantially'as in my prior patent. The operator then places hisfoot on the treadle (not shown) and depresses the worksupport E againstthe tension of the spring I) to a suflicient distance to permit theinsertion of the sole edge between said work support E and the table G.He then takes the shoe in his left hand with the heel toward the leftand places the tread surface of the sole upon the work support E withthe upper surface of the welt beneath the table G at a point at theforward part of theshank and with the edge of the sole bearing againstthe gage which has previously been adjusted to a position to bring thestitches to beoperated upon directly beneath the bulge on the indentingtoolj,whenthe foot is removed from the treadle and the tension of thespring I) presses the welt support E upward to clamp the sole. Now ifpower be applied to the driving wheel D to revolve the shaft the firsteffect produced is to move the slide I toward the left the full lengthof its travel which should be adjusted to a distance equal to about oneand one half times the average length of the stitches in the sample ofwork being operated upon. As the slide I moves toward the left the feedpawl O is moved with it and the spring 7a presses the point of the pawllightly upon the'stitch at the rightof the one to be separated until bythe continu- The lever ation of the movement toward the left the pointof the feed pawl drops into the space.

between the stitch it has just been resting upon and the stitch next tothe left thereof, and during the remainder of the movement of the slideI toward the left the work will be fed a 'distanceequal to the length ofstitch in advance of said feed pawl. When the movement of the slide Iand the feed pawl toward the left is completed the point of the feedpawl and the space between the two stitches into which said pawl ispressed by the spring is directly beneath the indenting tool j. The nexteffect produced by the revolution of the cam shaft is to raise the frontend of the lever H and cause the pawl d to engage the ratchet plate e,slightly lift and lock the work support E with the sole edge firmlyclamped between it and thetableG. WVhen the work is locked in positionthe feed slide is returned to the extreme of its throw toward the rightthereby moving the point of the feed pawl over the first stitch to theright and upon the second and along the same till its motion iscompleted, and then the indenting tool 7 is forced into thespace betweenthe two stitches just left by the feed pawl. The next operation is theraising of the indenting tool to its uppermost position, and then tounlock the lower work support, when a single revolution of the shaft Bwill have been completed; and these operationswill berepeated, in theorder named,during each revolutionof said shaft until the shoe has beenfed around to the forward part of the shank on the side opposite thestarting point, when the motion of the shaft will be arrested and theshoe removed from themachine.

In my present invention the intervals between the stitches are locatedand the work is fed by one tool in the form of a pawl, and the spacesbetween the stitches are indented by another tool which has only an upand down motion while in the machine described in my prior patent beforecited the intervals between thestitches are located and indented and thework is fed by a single tool, but necessarily requiring morecomplication of parts than my present invention.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is-

1. In a machine for separating the stitches in boot and shoe soles afterthe sewing has been completed the combination of a feedpawl constructedand arranged to locate the intervals between the stitches whether ofuniform or varying lengths and feeding the Work distances correspondingto the varying lengths of the stitches, and aseparate tool forindentingthe sole between said stitches.

2. In a machine for separating the stitches in boot'and shoe soles thecombination of a vertically movable work support; a fixed table orsupport to bear upon the upper surface of the welt and having formed inits front end a slot having one side wall thereof inclined to fit theangleof thefeed pawl; a pawl IIO for locating the intervals between thestitches and feeding the work; and a separate tool constructed andarranged to be moved to and from the work in a vertical plane and indentthe sole between said stitches.

3. In a machine for separating the stitches in boot and shoe soles, thecombination of a work support to receive the tread surface of the sole;an upper work support or table to rest upon the upper surface of thewelt and having a slot in its front end one side wall of which isinclined to permit the passage of the feed pawl; a gage to determine theposition of the soleon the work support; a pawl for locating theintervals between the stitches whether of uniform or varying lengths;means having provision for moving said pawl to and fro in the directionof the length of the sole edge; a separate tool for indenting the solebetween said stitches and means havingprovision for moving saidindenting tool to and from said sole in a vertical plane. 7 4. In amachine for separating the stitche 1n boot and shoe soles thecombination of a work support to receive the tread surface of the sole;an upper work support or table to bear upon the upper surface of thewelt and provided with a slot in its front end one side wall of which isinclined to serve as a stop for the feed pawl when the work is removed;a gage to determine the position of the sole on the work support; ahorizontally reciprocating slide; a pawl carried by said slide andadapted to locate the intervals between the stitches and engage the sameto feed the work; a cam and cam lever for reciprocating said slide; avertically vibrating lever; a cam for operating said lever; and anindenting tool carried by the front end of said lever.

5. In a machine for separating the stitches in boot and shoe soles, thecombination of a work support to receive the tread surface of the sole;an upper work support or table to bear upon the upper surface of thewelt; a gage to determine the position of the sole on the work support ahorizontally reciprocating slide provided with a transverse groove onits upper side; a rectangular block fitted to and movable endwise ofsaid groove; a cam lever having a vertical longitudinal slot in itsfront arm; an adjustable fulcrum pin fit ted and movable endwise of theslot in said lever and havingits lower end set in said rectangularblock; a hand lever for adjusting said fulcrum pin; a feedpoint or pawlcarried by said slide for locating the intervals between the stitchesand feeding the work; and an independent tool for indenting the solebetween said stitches.

6. In a machine for separating the stitches in boot and shoe soles,thecombination of a movable work support to receive the tread surface ofthe sole; an upper work support or table to bear upon the upper surfaceof the welt, and provided in its front end with aslot for the passage ofthe feed pawl and with a transverse semi-circular groove in its underside to receive the upwardly projecting portions of the stitches; andmeans having provision for clamping the sole edge between said table andthe movable work support.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 20th day of September, A.D. 1894.

JOHN B. HADAWAY.

Witnesses:

N. O. LoMBARn, WALTER E. LOMBARD.

